CN221638176U

CN221638176U - Pipette suction head

Info

Publication number: CN221638176U
Application number: CN202323465728.5U
Authority: CN
Inventors: 徐利娟; 刘芳芳; 乔倪霖
Original assignee: Shanghai Yaodeng Biotechnology Co ltd
Current assignee: Shanghai Yaodeng Biotechnology Co ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-09-03
Anticipated expiration: 2033-12-19

Abstract

The utility model discloses a pipette tip, which comprises a tip body, wherein the tip body comprises a cylinder part and a connecting part, a limiting ring is fixedly connected to the inner walls of the cylinder part and the connecting part respectively, a blocking filter element is arranged between the two limiting rings, the top end of the cylinder part is embedded at the bottom end of the connecting part, a blocking head is blocked at the port of the bottom end of the cylinder part through arrangement, so that the cylinder part can temporarily store a liquid sample, the condition that liquid falls due to insufficient internal tension of the tip is avoided, the amount of the sucked liquid sample can be accurately controlled through scale marks on the cylinder part, further, the liquid sample can be effectively prevented from entering a pipette to pollute the pipette through arranging the blocking filter element in the cylinder part and the connecting part, and further, the blocking filter element can be conveniently taken out through separation of the cylinder part and the connecting part, thereby enabling the use function of the tip to be more various, and further improving the practicability of the tip in use.

Description

Pipette suction head

Technical Field

The utility model relates to the technical field of suction heads, in particular to a suction head of a liquid dispenser.

Background

The pipette tip is a tip used on a pipette.

Pipette tips are classified into disposable tips and multi-use tips. Single use is typically used in a laboratory or hospital, with each tip being used only once to prevent cross-contamination of the sample. The multi-use pipette tip is generally used for transferring the same sample in batches, and has no pollution problem.

When the suction head is used for sucking a sample for multiple times, liquid with better fluidity or more viscous liquid can be sucked. When sucking a liquid having a high fluidity, the liquid is retained in the suction head by the surface tension of the liquid after sucking the liquid, and the liquid does not flow out of the suction head. When sucking up relatively viscous liquids, it is necessary to ensure that the suction head is able to suck up liquid into the suction head.

At present, in the pipetting process, the pipette can not apply any acting force to the suction head, although the liquid exists in tension in the suction head, the liquid level difference can be increased due to the fact that the liquid is large in quantity, the tension is insufficient to overcome the gravity, the liquid in the suction head can fall down, and the daily use of personnel is affected, so that the pipette suction head is provided for optimizing and solving the problems.

Disclosure of utility model

The present utility model is directed to a pipette tip that solves the above-mentioned problems with the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a pipettor suction head, includes the suction head main part, the suction head main part includes cylinder portion and connecting portion, a fixedly connected with spacing ring respectively on the inner wall of cylinder portion and connecting portion, two the separation filter core has been placed between the spacing ring, the cylinder portion top is inlayed and is established in the connecting portion bottom, set up the draw-in groove that is used for the cylinder portion card to establish the connection on the connecting portion bottom, fixedly connected with bolt on the draw-in groove inner wall, bolt one end is inlayed and is established on cylinder portion top port, inlay between the draw-in groove that cylinder portion top and connecting portion bottom were seted up and be equipped with sealing rubber packing ring, cylinder portion outside fixedly connected with couple, the cylinder portion outside is connected with the plastic connecting rope through the connecting seat, plastic connecting rope one end fixedly connected with blocks up the head, it is connected with the link to block up head outside symmetry, cylinder portion front surface is provided with the scale mark.

As a further scheme of the utility model: the upper end and the lower end of the column part and the connecting part are both provided with openings, and the bottom end of the column part is provided with a conical shape.

As still further aspects of the utility model: the top end opening of the connecting part is matched with the connecting interface of the pipettor.

As still further aspects of the utility model: the top end port of the column body is provided with a slot for inserting the bolt.

As still further aspects of the utility model: annular grooves for embedding and connecting the sealing rubber gaskets are formed between the clamping grooves formed in the top end of the column body and the bottom end of the connecting part.

As still further aspects of the utility model: the blocking head is provided with a rubber block, one end of the rubber block extends into the opening at the bottom end of the column part and is tightly attached to the inner wall of the column part, and the hanging ring is in adaptive connection with the hanging hook.

Compared with the prior art, the utility model has the beneficial effects that:

Through setting up the blocking head and blockking up in cylinder bottom port to make the cylinder can deposit temporarily liquid sample, avoid leading to the condition that drops to appear because of the inside tension of suction head is not enough, and can carry out accurate control to the volume of the liquid sample of absorption through the scale mark on the cylinder, further through set up the separation filter core in cylinder and connecting portion inside, and then can effectually prevent that liquid sample from getting into in the pipettor to cause it and pollute, and then the accessible separates cylinder and connecting portion, and then conveniently take out the separation filter core, thereby make the service function of suction head more various, further improved the practicality that the suction head used.

Drawings

FIG. 1 is a schematic view of a pipette tip.

FIG. 2 is a schematic view of the structure at A in a pipette tip.

Fig. 3 is a front view of a pipette tip.

The figure shows: the suction head comprises a suction head main body 1, a column body 2, a connecting part 3, a limiting ring 4, a blocking filter element 5, a bolt 6, a sealing rubber gasket 7, a hook 8, a plastic connecting rope 9, a blocking head 10, a hanging ring 11 and scale marks 12.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in the embodiment of the utility model, a pipette tip comprises a tip body 1, a cylinder part 2, a connecting part 3, a limiting ring 4, a blocking filter element 5, a plug 6, a sealing rubber gasket 7, a hook 8, a plastic connecting rope 9, a blocking head 10, a hanging ring 11 and scale marks 12, wherein the tip body 1 comprises the cylinder part 2 and the connecting part 3, the upper end and the lower end of the cylinder part 2 and the connecting part 3 are both arranged in an opening way, the bottom end of the cylinder part 2 is arranged in a conical shape, the inner walls of the cylinder part 2 and the connecting part 3 are respectively fixedly connected with a limiting ring 4, a blocking filter element 5 is placed between the two limiting rings 4, the opening of the top end of the connecting part 3 is matched with a connecting interface of the pipette, a clamping groove for clamping the connecting cylinder part 2 is formed in the bottom end of the connecting part 3, a connecting groove 6 is fixedly formed in the inner wall of the plug groove, one end of the 6 is embedded in the top end of the cylinder part 2, the plug 2 is fixedly embedded in the top end of the connecting groove, the sealing plug 2 is fixedly embedded in the groove 10 formed in the connecting groove for connecting the connecting groove 9 of the connecting part 2, the sealing rubber gasket is formed in the sealing groove 10 is formed in the connecting part 7, the sealing groove is formed in the connecting groove is fixedly embedded in the connecting groove 9 between the top end of the connecting part 2 and the sealing gasket 3, the sealing gasket is fixedly embedded in the sealing groove 10 is fixedly connected with the sealing end 9, and the sealing groove is fixedly embedded in the sealing groove 9 is fixedly connected with the sealing groove 9, and is fixedly embedded in the sealing groove is matched end, and is matched with the sealing groove, and is matched sealing end, and is matched with sealing groove, and is matched sealing joint is matched with sealing joint, and is matched. The hanging ring 11 is in adaptive connection with the hanging hook 8, and the front surface of the column part 2 is provided with scale marks 12.

The working principle of the utility model is as follows:

When the pipette tip is needed, personnel firstly carry out the looks adaptation connection through the pipette tip connection interface with connecting portion 3 and the external world through with tip main part 1, further through taking off plug head 10 from the cylinder portion 2 bottom and utilizing link 11 to hang to establish on couple 8, further personnel carry out the pipetting operation to liquid sample through handheld pipette tip main part 1, further after absorbing liquid sample, personnel's accessible plugs plug head 10 again on cylinder portion 2, thereby make cylinder portion 2 can carry out interim depositing to liquid sample, further personnel still accessible cylinder portion 2 scale mark 12 carries out accurate control to the volume of absorbing liquid sample, and then can prevent that liquid sample from getting into the pipette through cylinder portion 2 and the separation filter core 5 that connecting portion 3 inside set up from causing the pollution to it, and then still accessible separates cylinder portion 2 and connecting portion 3, and then conveniently take out separation filter core 5.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Pipette tip comprising a tip body (1), characterized in that: the suction head body (1) comprises a cylinder part (2) and a connecting part (3), a limiting ring (4) is fixedly connected to the inner wall of the cylinder part (2) and the inner wall of the connecting part (3), two limiting rings (4) are arranged between the limiting rings, a blocking filter core (5) is embedded in the top end of the cylinder part (2) at the bottom end of the connecting part (3), a clamping groove for the connection of the cylinder part (2) is formed in the bottom end of the connecting part (3), a bolt (6) is fixedly connected to the inner wall of the clamping groove, one end of the bolt (6) is embedded in the top end port of the cylinder part (2), a sealing rubber gasket (7) is embedded between the clamping groove formed in the top end of the cylinder part (2) and the bottom end of the connecting part (3), a hook (8) is fixedly connected to the outer side of the cylinder part (2) through a connecting seat, a blocking plug head (10) is fixedly connected to one end of the plastic connecting rope (9), a hanging ring (11) is symmetrically connected to the outer side of the blocking head (10), and the surface of the cylinder part (2) is provided with a scale mark (12).

2. The pipette tip of claim 1 wherein: the upper end and the lower end of the column body (2) and the connecting part (3) are both provided with openings, and the bottom end of the column body (2) is provided with a conical shape.

3. The pipette tip of claim 1 wherein: the top end opening of the connecting part (3) is matched with the connecting interface of the liquid transfer device.

4. The pipette tip of claim 1 wherein: the top end port of the column body (2) is provided with a slot for embedding the bolt (6).

5. The pipette tip of claim 1 wherein: annular grooves for embedding and connecting the sealing rubber gasket (7) are formed between the top end of the column body (2) and the clamping groove formed in the bottom end of the connecting portion (3).

6. The pipette tip of claim 1 wherein: the rubber plug is arranged on the plug head (10), one end of the rubber plug extends into the opening at the bottom end of the column body and is tightly attached to the inner wall of the column body, and the hanging ring (11) is in adaptive connection with the hanging hook (8).